dart::CodeLookupTable Class Reference

#include <profiler.h>

Inheritance diagram for dart::CodeLookupTable:

Public Member Functions
	CodeLookupTable (Thread *thread)
intptr_t	length () const
const CodeDescriptor *	At (intptr_t index) const
const CodeDescriptor *	FindCode (uword pc) const
Public Member Functions inherited from dart::ZoneAllocated
	ZoneAllocated ()
void *	operator new (size_t size)
void *	operator new (size_t size, Zone *zone)
void	operator delete (void *pointer)

Friends
class	CodeLookupTableBuilder

Detailed Description

Definition at line 547 of file profiler.h.

Constructor & Destructor Documentation

CodeLookupTable()

dart::CodeLookupTable::CodeLookupTable ( Thread *  thread )

explicit

Definition at line 1472 of file profiler.cc.

                                               {
  Build(thread);
}

Member Function Documentation

At()

const CodeDescriptor * dart::CodeLookupTable::At ( intptr_t  index ) const

inline

Definition at line 553 of file profiler.h.

                                                 {
    return code_objects_.At(index);
  }

FindCode()

const CodeDescriptor * dart::CodeLookupTable::FindCode

(

uword

pc

)

const

Definition at line 1544 of file profiler.cc.

                                                              {
  intptr_t first = 0;
  intptr_t count = length();
  while (count > 0) {
    intptr_t current = first;
    intptr_t step = count / 2;
    current += step;
    const CodeDescriptor* cd = At(current);
    if (pc >= cd->Start()) {
      first = ++current;
      count -= step + 1;
    } else {
      count = step;
    }
  }
  // First points to the first code object whose entry is greater than PC.
  // That means the code object we need to check is first - 1.
  if (first == 0) {
    return nullptr;
  }
  first--;
  ASSERT(first >= 0);
  ASSERT(first < length());
  const CodeDescriptor* cd = At(first);
  if (cd->Contains(pc)) {
    return cd;
  }
  return nullptr;
}

length()

intptr_t dart::CodeLookupTable::length ( ) const

inline

Definition at line 551 of file profiler.h.

{ return code_objects_.length(); }

Friends And Related Symbol Documentation

CodeLookupTableBuilder

friend class CodeLookupTableBuilder

friend

Definition at line 567 of file profiler.h.

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The documentation for this class was generated from the following files:

• third_party/dart-lang/sdk/runtime/vm/profiler.h
• third_party/dart-lang/sdk/runtime/vm/profiler.cc